219212940 has 48 divisors (see below), whose sum is σ = 614970720. Its totient is φ = 58344960.

The previous prime is 219212927. The next prime is 219212989. The reversal of 219212940 is 49212912.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 219212898 and 219212907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30930 + ... + 37350.

It is an arithmetic number, because the mean of its divisors is an integer number (12811890).

Almost surely, 2^219212940 is an apocalyptic number.

219212940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219212940 is an abundant number, since it is smaller than the sum of its proper divisors (395757780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219212940 is a wasteful number, since it uses less digits than its factorization.

219212940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002 (or 7000 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 219212940 is about 14805.8414147930. The cubic root of 219212940 is about 602.9603146521.

The spelling of 219212940 in words is "two hundred nineteen million, two hundred twelve thousand, nine hundred forty".